/* Copyright 2009 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package geb.driver

import org.openqa.selenium.WebDriver

class CallbackDriverFactory implements DriverFactory {

    final private Closure callback

    CallbackDriverFactory(Closure callback) {
        this.callback = callback
    }

    WebDriver getDriver() {
        try {
            def driver = callback()
            if (!(driver instanceof WebDriver)) {
                throw new DriverCreationException("callback '${callback}' returned '$driver' which is not a WebDriver implementation")
            }
            driver
        } catch (Throwable e) {
            throw new DriverCreationException("failed to create driver from callback '${callback}'", e)
        }
    }

}